/Engine/Plugins/Experimental/PCG/Source/PCG/Public/Elements/PCGAttributeReduceElement.h
If the OutputAttributeName is None, we will use the InputSource name
[UCLASS](Programming/UnrealArchitecture/Reference/Classes#classdeclaration)(BlueprintType, ClassGroup=(Procedural)) class UPCGAttributeReduceSettings : public [UPCGSettings](API\Plugins\PCG\UPCGSettings)
FPCGAttributePr...
InputSource
EPCGAttributeRe...
Operation
FName
OutputAttributeName